JP2002147460A - Sliding member for slip slide and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly durable sliding member for self-lubricating slip slide having low friction coefficient and superior repeated sliding performance. SOLUTION: In a state where a resin slide material including solid lubricant and thermosetting resin are partially hardened, solid lubricant powder is applied on the surface, heated and hardened so that the sliding member for the slip slide having a layer with high solid lubricant concentration is manufactured on the slide surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-lubricating sliding member for a sliding slide and a method of manufacturing the sliding member. More specifically, a sliding member for a sliding slide having a resin sliding member formed by transferring a thermosetting resin applied on a supporting substrate to a sliding guide surface of a mating substrate, and then manufacturing the same. About the method.

[0002]

2. Description of the Related Art A sliding member for a sliding slide having a resin sliding member used for a machine tool or the like generally has a resin sliding member on a surface of a base material (metal, resin, etc.).
It is used for one or both substrates of sliding slides, and is an important part for performing high-precision work processing by sliding both substrates. Further, the resin sliding member on the surface of the sliding member for a sliding slide is required to have characteristics such as mechanical strength, dimensional accuracy, and lubricity as sliding characteristics.

[0003] Thermoplastic resins such as phenolic resins, novolak resins, polyimides, and epoxy resins are often used as the resin sliding materials for forming the resin sliding members. By using a two-part epoxy resin composed of a curing agent in combination, a cured product having various properties can be obtained. These materials have been applied and used as sliding members for sliding slides because of their advantages such as excellent mechanical properties, low molding shrinkage and high dimensional accuracy. I have.

In some cases, a solid lubricant such as graphite, permolybdenum disulfide, or a fluororesin is added to the resin sliding material for the purpose of imparting self-lubricating properties to the resin sliding member.

A conventional self-lubricating resin sliding member is obtained by molding a resin sliding material containing a thermosetting resin and a solid lubricant on the surface of a base material, and further performing a curing treatment to cure the resin sliding material. It was used as a sliding slide member.

A sliding member for a sliding slide having a resin slide repeatedly slides with a mating base material, so that a solid lubricant contained in the resin sliding member is transferred to the mating base material surface to lower the friction coefficient. Can do things.

[0007]

In the sliding member for a sliding slide having the above-mentioned resin sliding member, in order to improve the sliding characteristics, the concentration of the solid lubricant contained in the resin sliding material must be reduced. The higher the concentration of the solid lubricant, the lower the friction coefficient, but the higher the viscosity of the resin sliding material, the lower the workability. . For this reason, it has been difficult to form a sliding member for a sliding slide with good workability and low friction.

When a fluorine resin such as PTFE or FEP is added at a high concentration as a solid lubricant for the purpose of lowering the friction coefficient, not only the viscosity increases but also the adhesion between the base material and the resin sliding member. There is also a problem that a peeling phenomenon is caused due to a decrease in the thickness.

Further, after the solid lubricant in the resin sliding member is transferred to the mating member, the solid lubricant may be detached from the mating substrate during repeated sliding. The desorption of the solid lubricant from the substrate causes a sharp increase in the coefficient of friction in sliding. In such a state, stable sliding characteristics cannot be obtained until the transfer of the solid lubricant from the resin sliding member occurs again.

SUMMARY OF THE INVENTION An object of the present invention is to provide a sliding member for a sliding slide which has high workability, high sliding characteristics, and excellent adhesion between a resin sliding member and a substrate, and a method of manufacturing the same. I do.

[0011]

The sliding member for a sliding slide according to the present invention is a sliding member for a sliding slide having a resin sliding member on a sliding surface of a substrate, wherein the resin sliding member is a solid lubricant. Solid lubricant powder is applied to the surface of the resin sliding material in a state where the thermosetting resin containing is partially cured, and is heated and cured to provide a layer with a high solid lubricant concentration on the surface. It is assumed that.

[0012] The sliding member for a sliding slide according to the present invention is characterized in that the thermosetting resin is a cold-setting resin containing a main component and a curing agent.

[0013] The sliding member for a sliding slide according to the present invention is characterized in that the cold-setting resin is an epoxy resin.

The sliding member for a sliding slide according to the present invention has a glass transition temperature of 50 ° C. when the resin sliding material is partially cured when a solid lubricant powder is applied to the surface of the resin sliding material.
It is characterized by the following.

In the sliding member for a sliding slide according to the present invention, a solid lubricant powder is applied to the surface of the resin sliding material in a state where the thermosetting resin is partially cured, and then the resin sliding material is softened once by heating. In addition, a high-concentration solid lubricant powder is incorporated into the surface layer, and then the resin sliding member is formed by being completely cured.

The sliding member for a sliding slide according to the present invention is characterized in that the sliding member is used as at least one of opposing substrates of the sliding slide.

The sliding member for a sliding slide according to the present invention is characterized in that it has a self-lubricating property and is used without lubrication.

The method for producing a sliding member for a sliding slide according to the present invention comprises the steps of applying an uncured thermosetting resin containing a solid lubricant to a first base material, and applying a second Transferring the shape of the sliding surface of the base material of the base material, forming the thermosetting resin having the transferred shape into a partially cured resin sliding material, and applying the partially cured resin sliding material to the surface of the partially cured resin sliding material. The solid lubricant powder is applied, adhered again to the second base material and heated, and the shape of the slip surface of the second base material is transferred to the surface of the resin sliding material, and the resin sliding material is completely cured. It is characterized by forming a sliding member.

The method of manufacturing a sliding member for a sliding slide according to the present invention is characterized in that the thermosetting resin is a room temperature curable resin containing a main agent and a curing agent.

The method of manufacturing a sliding member for a sliding slide according to the present invention is characterized in that the cold-setting resin is an epoxy resin.

The method of manufacturing a sliding member for a sliding slide according to the present invention is characterized in that the resin material in the partially cured state has a glass transition temperature of 5 when a solid lubricant powder is applied to the surface of the resin sliding material.
It is characterized in that the temperature is 0 ° C. or lower.

In the method of manufacturing a sliding member for a sliding slide according to the present invention, a solid lubricant powder is applied to the surface of a partially cured resin sliding material, brought into intimate contact with a second base material, and then heated to heat the resin sliding material. The material has a resin sliding member which softens once, takes in high-concentration solid lubricant powder into the surface layer, transfers the shape of the slip surface of the second base material, and is completely cured and formed. Things.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG.

In order to form the resin sliding member 7 on the first substrate 1 of the present invention, first, an uncured resin sliding material 4 is applied to the surface of the first substrate 1, The release agent 3 was thinly applied to the surface of the substrate 2.

Next, the resin sliding material 4 is partially cured in a state where the uncured resin sliding material 4 and the second substrate 2 are in close contact with each other, and the slip surface of the second substrate 2 is shaped. Was formed to form a resin sliding material 5 to which was faithfully transferred.

Next, the first base material 1 and the second base material 2 are separated, the solid lubricant powder 6 is thinly applied to the surface of the resin sliding material 5, and the release agent 3 is applied again. The sliding resin member 7 of the present invention was formed by forming the sliding resin member 7 in close contact with the surface of the second substrate 2 and heating.

As described above, the resin sliding member 7 can simplify the scraping process which is usually performed manually by faithfully transferring the surface shape of the second base material 2.

Further, by providing a spacer between the first base material 1 and the sliding surface of the second base material 2, the thickness of the resin sliding material 5 can be arbitrarily controlled.

In FIG. 1, the second base material 2 is used to form the resin sliding material 5 in which the shape of the slip surface of the second base material is faithfully transferred. Another base material having the same slip surface shape as the base material 2 may be used.

The method of applying the solid lubricant powder 6 may be a method of directly spraying the solid lubricant powder 6 on the surface of the resin sliding material 5 or a method of applying a solvent in which the solid lubricant powder 6 is dispersed. At that time, it is necessary that the resin sliding material 5 be inert to the solvent used. For example, when an epoxy resin is used as the thermosetting resin, a lower saturated aliphatic hydrocarbon solvent such as hexane is preferable.

The coating thickness of the solid lubricant powder 6 is preferably 1 to 1000 μm in dry film thickness, more preferably 10 to 1000 μm.
It is about 100 μm.

When the glass transition temperature of the resin sliding material 5 is higher than 50 ° C., the softening of the resin sliding material 5 does not sufficiently occur in the subsequent heating process, and the solid lubricant powder 6 may be taken into the surface layer. Can not.

Since the resin sliding member 7 of the sliding member for sliding slide formed in this manner has a high concentration of solid lubricant on the surface, the solid lubricant powder 6 is removed from the base material by repeated sliding. Even after the release, the new solid lubricant powder 6 existing on the surface layer of the resin sliding member 7 is immediately replenished, so that stable sliding characteristics can be maintained.

The thermosetting resin contained in the sliding resin member 7 can be a phenol resin, a novolak resin, a polyimide, an epoxy resin, or the like. In the most preferred embodiment of the present invention, an epoxy resin is used. Was. When the epoxy resin is used, a curing accelerator such as a tertiary amine, phenol, an organic acid, or a curing catalyst may be used in addition to the main agent and the curing agent.

Further, the sliding resin member 7 of the sliding slide of the present invention is made of an inorganic filler such as carbon black, talc, mica, kaolin, silica, glass beads, etc. for the purpose of improving mechanical properties, dimensional stability and thermal properties. May be used.

Hereinafter, a model of a sliding member for a sliding slide having the resin sliding member 7 of the present invention was prepared.
The evaluation was performed.

(Example 1) Room temperature curing type epoxy resin composition Main agent: Bisphenol A epoxy resin curing agent; Modified amine curing agent PTFE powder and main agent are mixed as a solid lubricant so that the PTFE concentration is 5% by weight of the whole. Thereafter, a curing agent was added and mixed to prepare an uncured epoxy resin. An appropriate amount of the uncured epoxy resin, which is the resin sliding material 4, is applied to a S45C test piece base material (first base material 1) (50 mm × 50 mm × 5).
(mm square), and pressed against a sample molding jig (substrate having the same slip surface shape as the second substrate 2) (100 mm × 100 mm × 10 mm flat jig), on which the release agent 3 was previously applied. . The coating film was controlled by providing a 1.5 mm thick spacer at the end of the epoxy resin of the uncured resin sliding material 4 between both base materials.

After that, the resin sliding material 5 formed on the test piece base material (first base material 1) was left at room temperature (25 ° C.) for 24 hours to partially cure the sample, and then the sample forming jig (first test piece) was used. A resin sliding material 5 formed on a test piece base material (first base material 1) was detached from a base material having the same slip surface shape as the second base material 2).

Next, the glass transition temperature of the resin sliding material 5 was measured by differential scanning calorimetry (DSC).
It was found to be about 43 ° C.

Next, PTFE was applied as a solid lubricant powder 6 to the surface of the resin sliding material 5 formed on the test piece base material (first base material 1). The coating method is PTFE powder 15w
A hexane dispersion solution containing t% was used.

After confirming the drying by visual inspection, the solid lubricant powder 6
The surface of the resin sliding material 5 coated with the resin was pressed again against the sample molding jig coated with the release agent 3 (a substrate having the same slip surface shape as the second substrate 2).

Thereafter, at 60 ° C. for 3 hours, and further at 80 ° C. for 2 hours.
The resin sliding member 7 formed on the test piece base material (first base material 1) by performing heat curing for a long time is formed into a molding jig (second base material 2).
(A substrate having the same slip surface shape).

Subsequently, the S45C flat plate indenter (second base material 2) (10 mm × 10 mm × 5 mm) coated with diamond-like carbon was slid against the resin sliding member 7. The sliding conditions are as follows: load 9.8 N, speed 6 m /
min, the reciprocating distance was 40 mm, and the number of slides was 20,000. Next, the coefficient of friction after 20,000 repetitions of sliding was determined as follows: load 9.8 N, speed 0.1 m / min, travel distance 20 mm
I went in. The results are shown below. Static friction coefficient: 0.16 Dynamic friction coefficient: 0.08

As described above, a sliding member for a sliding slide having the resin sliding member 7 produced by using the resin sliding material 5 whose glass transition temperature is within the range of the present invention may have a sufficiently low friction property. understood.

(Example 2) A test piece base material (first base material 1) was formed under the same conditions as in Example 1 except that a bisphenol F-based epoxy resin was used as a main component of a cold-setting epoxy resin. A resin sliding member 7 was produced.

When the glass transition temperature of the resin sliding material 5 was measured by differential scanning calorimetry (DSC), about 4
It was found to be 0 ° C.

The resin sliding member 7 formed on the prepared test piece base material (first base material 1) and a flat plate indenter (second base material 2)
Was repeated 20,000 times and the friction coefficient was measured.
The results are shown below. Static friction coefficient: 0.18 Dynamic friction coefficient: 0.09

As in the case of Example 1, the sliding member for sliding slide having the resin sliding member 7 produced by using the resin sliding material 5 whose glass transition temperature is within the range of the present invention has a sufficiently low friction property. It turns out.

Example 3 A resin sliding member 7 formed on a test piece base material (first base material 1) under the same conditions as in Example 1 except that molybdenum disulfide was used as a solid lubricant. Was prepared.

A resin sliding member 7 and a flat plate indenter (second base material 2) formed on the prepared test piece base material (first base material 1)
Was repeated 20,000 times and the friction coefficient was measured.
It is shown below. Static friction coefficient: 0.20 Dynamic friction coefficient: 0.14

As described above, a sliding member for a sliding slide having the resin sliding member 7 produced using the resin sliding material 5 having a glass transition temperature within the range of the present invention may have a sufficiently low friction property. understood.

Comparative Example 1 A resin slide formed on a test piece base material (first base material 1) under the same conditions as in Example 1 except that the solid lubricant was not applied to the partially cured epoxy resin surface. The moving member 7 was produced.

The resin sliding member 7 and the flat plate indenter (second base 2) formed on the prepared test piece base material (first base 1)
Was repeated 20,000 times and the friction coefficient was measured.
It is shown below. Static friction coefficient: 0.33 Dynamic friction coefficient: 0.18

As described above, when the concentration of the solid lubricant in the resin sliding member 7 is uniform and the concentration of the solid lubricant is low, the coefficient of friction is high, and the sliding member for the sliding slide has good sliding properties. No properties were found.

(Comparative Example 2) After forming the resin sliding material 5, 8
Solid lubricant powder 6 after further heating and curing at 0 ° C. for 3 hours
A resin sliding member 7 formed on a test piece base material (first base material 1) was prepared under the same conditions as in Example 1 except that was applied. When the resin sliding member 7 was removed from the molding jig, the solid lubricant powder 6 of PTF was removed from the surface of the resin sliding member 7.
E powder fell off, and the coefficient of friction after 20,000 repetitions of sliding was the same as in Comparative Example 1.

The glass transition temperature of the resin sliding material 5 when the solid lubricant powder 6 was applied was measured by differential scanning calorimetry (DSC).
Was found to be about 80 ° C.

As described above, when the resin sliding material 5 when applying the solid lubricant powder 6 is not in a partially cured state and the glass transition temperature is higher than the range of the present invention, the obtained resin sliding material It was found that the coefficient of friction of the member 7 was high, and that it did not exhibit good sliding characteristics as a resin sliding member for a sliding slide.

[0058]

As described above, by using the self-lubricating resin sliding member of the present invention, the friction coefficient is low, the repetition sliding property is excellent, the workability is good, and the resin sliding property is improved. A highly durable sliding member for a sliding slide having good adhesion between the member and the substrate was obtained.

FIG. 1 used for explaining the present invention
In the above, the base material of the sliding member for sliding slide is shown as a plane, but it is naturally possible to use a sliding member having irregularities or a sliding member in which both sliding members are fitted.

[Brief description of the drawings]

FIG. 1 is a view showing a method of manufacturing a slide slide according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st base material 2 2nd base material 3 Release agent 4 Uncured resin sliding material 5 Resin sliding material 6 Solid lubricant powder 7 Resin sliding member

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Claims (12)

[Claims] 1. A sliding member for a sliding slide having a resin sliding member on a sliding surface of a substrate, wherein the resin sliding member is a resin sliding member in which a thermosetting resin containing a solid lubricant is partially cured. A sliding member for a sliding slide, wherein a layer having a high solid lubricant concentration is provided on a surface by applying a solid lubricant powder on a material surface and curing by heating. 2. The sliding member for a sliding slide according to claim 1, wherein the thermosetting resin is a cold-setting resin containing a main agent and a curing agent. 3. The sliding member for a sliding slide according to claim 2, wherein the cold-setting resin is an epoxy resin. 4. The resin sliding material according to claim 1, wherein when the solid lubricant powder is applied to the surface of the resin sliding material, the glass transition temperature of the resin sliding material after the partial curing is 50 ° C. or less. Sliding member for sliding slides. 5. A high-concentration solid lubricant powder, wherein a solid lubricant powder is applied to the surface of the resin sliding material in a state in which the thermosetting resin is partially cured and then heated to soften the resin sliding material once. The sliding member for a sliding slide according to claim 1, characterized in that the sliding member has a resin sliding member formed by incorporating the resin into the surface layer and then completely curing the resin. 6. The sliding material for a sliding slide according to claim 1, wherein the sliding member for a sliding slide is used for at least one of opposing substrates of the sliding slide. 7. The sliding member for a sliding slide according to claim 1, wherein the sliding member has a self-lubricating property and is used without lubrication. 8. A step of applying an uncured thermosetting resin containing a solid lubricant to a first substrate, and a step of transferring a shape of a slip surface of a second substrate to the thermosetting resin. And forming the thermosetting resin with the transferred shape into a partially cured resin sliding material; applying a solid lubricant powder to the surface of the partially cured resin sliding material; Slip characterized by being closely adhered to the base material and heating to transfer the shape of the slip surface of the second base material to the surface of the resin slide material and completely cure the resin slide material to form a resin slide member. A method for manufacturing a sliding member for a slide. 9. The method according to claim 8, wherein the thermosetting resin is a cold-setting resin containing a main agent and a curing agent. 10. The method for manufacturing a sliding member for a sliding slide according to claim 8, wherein the cold-setting resin is an epoxy resin. 11. The resin sliding material according to claim 8, wherein a glass transition temperature of the partially cured resin sliding material when the solid lubricant powder is applied to the surface of the resin sliding material is 50 ° C. or less. A method for manufacturing a sliding member for a sliding slide. 12. A solid lubricant powder is applied to the surface of a partially cured resin sliding material, brought into close contact with a second base material, and then heated to temporarily soften the resin sliding material, thereby achieving high-concentration solid lubricant. 9. A sliding member for a sliding slide according to claim 8, comprising a resin sliding member formed by completely curing the resin sliding member after taking the agent powder into the surface layer and transferring the shape of the sliding surface of the second base material. Manufacturing method.